CN117081023B - Maintenance-free charging pile power lightning protection device - Google Patents
Maintenance-free charging pile power lightning protection device Download PDFInfo
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- CN117081023B CN117081023B CN202311057802.1A CN202311057802A CN117081023B CN 117081023 B CN117081023 B CN 117081023B CN 202311057802 A CN202311057802 A CN 202311057802A CN 117081023 B CN117081023 B CN 117081023B
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- lightning protection
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- 238000007789 sealing Methods 0.000 claims description 33
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 229910002804 graphite Inorganic materials 0.000 description 14
- 239000010439 graphite Substances 0.000 description 14
- 230000001052 transient effect Effects 0.000 description 12
- 238000003825 pressing Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 5
- 230000011664 signaling Effects 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The application relates to the technical field of lightning protection of a charging pile power supply, in particular to a maintenance-free lightning protection device for the charging pile power supply, which comprises a module shell, a pressure-sensitive assembly, a shell base and a conducting module, wherein a connecting groove for accommodating the module shell is formed in the shell base; the module comprises a module shell, a connecting groove, a first electrode layer, a second electrode layer, a lifting extension piece, a first electrode layer, a second electrode layer, a first electrode layer and a second electrode layer, wherein the pressure-sensitive assemblies are arranged in the module shell, a wire inlet end and a grounding end are arranged on a base of the shell, the conducting module comprises the first electrode layer, the second electrode layer and the lifting extension piece, the first electrode layer is arranged on the side wall, close to the wire inlet end, of the connecting groove, close to the grounding end, and the first electrode layers on two sides are respectively and electrically connected with the wire inlet end and the grounding end; the two ends of the module shell are provided with second electrode layers; the lifting extension piece is provided with a guide post which slides on the shell base and is electrically connected with the first electrode layer, and a contact head which can be connected with the second electrode layer, and the contact head can be connected with the second electrode layer and form an annular conductive area. The electric heating device has the effect of reducing the current flux and increasing the heating burning of the lower contact.
Description
Technical Field
The application relates to the technical field of lightning protection of a charging pile power supply, in particular to a maintenance-free lightning protection device for the charging pile power supply.
Background
At present, the lightning arrester is also called a lightning arrester, a surge protector, an overvoltage protector and the like, mainly comprises a power supply lightning arrester and a signal lightning arrester, and is used for preventing equipment in lightning stroke from being damaged by modern electricity and other technologies. The lightning energy absorption in the lightning arrester is mainly zinc oxide piezoresistor and gas discharge tube.
Among the prior art, lightning protection device includes module casing, graphite module, pressure sensitive component, shell base and switches on the module, can dismantle on the shell base and connect two at least module casings, all be provided with pressure sensitive component in the module casing, be provided with the connector of connecting wire and earthing terminal on the shell base, the connector switches on through switching on the pressure sensitive component in module and the module casing, switches on the module and generally connects dop and wire.
In the process of realizing the application, the inventor finds that at least the following problems exist in the technology, and when a large current passes or a transient large current passes, the connecting clamping head and the lead are easy to heat and melt to damage, so that the lightning protection effect of the lightning protection device is poor, and the charging pile is damaged.
Disclosure of Invention
In order to reduce the condition that the current flux is increased and the lower contact is heated and burnt, the lightning protection effect of the lightning protection device is maintained, and the maintenance-free charging pile power lightning protection device is provided.
The application provides a maintenance-free fills electric pile power lightning protection device adopts following technical scheme:
the maintenance-free charging pile power lightning protection device comprises a module shell, a pressure sensitive component, a shell base and a conduction module, wherein at least two connecting grooves for accommodating the module shell are formed in the shell base; the pressure-sensitive assembly is arranged in the module shell, at least two wire inlet ends and one grounding end which correspond to the module shell are arranged on the shell base, the conducting module comprises a first electrode layer, a second electrode layer and a lifting extension piece, the first electrode layers are arranged on the side walls, close to the wire inlet ends and the grounding end, of the connecting grooves, and the first electrode layers on the two sides are respectively and electrically connected with the wire inlet ends and the grounding end; the second electrode layers are arranged at the two ends of the module shell; the lifting extension piece is provided with a guide post which slides on the shell base and is electrically connected with the first electrode layer and a contact head which can be connected with the second electrode layer, and the contact head can be connected with the second electrode layer and form an annular conductive area.
By adopting the technical scheme, when the lightning protection device is installed, the shell base is taken out, the module shell is spliced in the connecting groove, then the sliding guide column is used to enable the contact head to be in contact with the second electrode layer and form the annular conductive area, so that the first electrode layer and the second electrode layer are conducted, when transient current is generated, the transient current is transferred to the second electrode layer through the first electrode layer, the guide column and the contact head, and then the current is transferred to the ground through the pressure-sensitive component inside the module shell; through the conduction module that sets up, reduced the too big direction damage that leads to of electric current for lightning protection effect of lightning protection device is kept, and great conductive area simultaneously is convenient for the quick passing through of electric current, has improved lightning protection device's stability.
Optionally, the contact hole has been seted up on the second electrode layer, the contact head includes annular contact ring and conductive post, annular contact ring with conductive post is connected, annular contact ring with the guide post is connected and slides along with the guide post, annular contact ring with the second electrode layer butt is conducted, conductive post peg graft in the contact hole, conductive post with the downthehole wall butt of contact just forms annular conductive area.
By adopting the technical scheme, after the guide post drives the conductive post to be inserted into the contact hole, the annular contact ring is abutted against the second electrode layer, and after transient current is transmitted into the first electrode layer through the wiring end, the transient current is transmitted to the second electrode layer through the guide post, the annular contact ring and the conductive post, then transmitted to the pressure-sensitive component through the second electrode layer, and is connected with the ground through the pressure-sensitive component; through the contact head that sets up, further strengthened conductive stability, increase the conduction area, the contact is good, reduces local heating, and then makes the lightning protection effect of lightning protection device obtain keeping.
Optionally, a conductive groove is formed on the second electrode layer, and the annular contact ring can sink into the conductive groove and contact with the peripheral side wall of the conductive groove.
By adopting the technical scheme, transient current is transmitted to the guide post through the first electrode layer, the guide post sequentially transmits the current to the annular contact ring, the conductive post and the second electrode layer, and then the current is transmitted to the ground through the pressure-sensitive component; the conducting groove that sets up has further increased the conduction area for transient current can be guided to ground fast, has further strengthened conductive stability simultaneously, increases the conduction area, and the contact is good, reduces local heating, and then makes the lightning protection effect of lightning protection device keep.
Optionally, a conductive cone is formed at the connection part of the annular contact ring and the conductive column to realize smooth transition between the annular contact ring and the conductive column, and a cone groove matched with the conductive cone is formed on the bottom wall of the conductive groove.
Through adopting above-mentioned technical scheme, through the setting of awl groove and conductive cone for conductive area further increases, and makes the contact of lift extension and second electrode layer better, has further strengthened conductive stability, increases the conduction area, and the contact is good, reduces the part and generates heat, and then makes lightning protection effect of lightning protection device keep.
Optionally, the module shell with all be provided with on the shell base and be used for cutting off first electrode layer with the insulating layer of second electrode layer, offer on the insulating layer and supply the conducting column with the punching hole that annular contact ring passed through, be provided with on the insulating layer and be used for sealing punching hole's closing mechanism.
Through adopting above-mentioned technical scheme, when taking down the module casing, closing mechanism seals the hole of wearing to establish, reduces the contact of people's finger, can play better guard action simultaneously.
Optionally, the sealing mechanism includes a sealing plate, two sealing plates slide on the insulating layer, and the two sealing plates slide to abut and seal the through hole.
Through adopting above-mentioned technical scheme, be provided with a plurality of spread grooves on the shell base, when partial spread groove does not use, the hole of wearing on the closing plate will insulating layer is closed, reduces people's mistake and touches, and reduces people skin surface's grease bonding on first electrode layer and second electrode layer, reduces the influence of grease to conductive properties.
Optionally, the closing mechanism further includes a connection block, the closing plates on the module housing are all provided with the connection block, the closing plates on the housing base are provided with linkage grooves, the connection block is detachably connected in the linkage grooves, the closing plates are close to the side walls of the conductive columns and are provided with guide grooves for the conductive columns to penetrate through, and the closing plates open the penetrating holes along with the sliding of the conductive columns.
By adopting the technical scheme, the module shell is clamped in the connecting groove, then the guide column is slid, the guide column drives the conductive column to be abutted with the guide groove, the conductive column slides and drives the two sealing plates to be far away from each other, the sealing plates on the shell base drive the sealing plates on the module shell to slide through the connecting block, so that the two penetrating holes are simultaneously opened, and the conductive column is conveniently inserted in the communication hole of the second electrode layer; the sealing mechanism is simple in structure, and sealing plates on the two insulating layers can be synchronously slid and opened, so that the first electrode layer and the second electrode layer are conveniently conducted.
Optionally, the sealing mechanism further comprises a reset spring, two reset springs are arranged on the insulating layer and connected with the sealing plates, and the two reset springs push the two sealing plates to be close to each other.
Through adopting above-mentioned technical scheme, when the conductive column withdraws the shell base, reset spring drives the closure board and seals and wear to establish the hole, makes to wear to establish the hole and keep normally closed through the reset spring that sets up, can reduce the entering of debris on the one hand, on the other hand reduces the contact of hand and first electrode layer and second electrode layer, makes it keep clean.
Optionally, a driving component is disposed on the housing base, and the driving component is connected with the lifting extension piece and drives the lifting extension piece to slide, where the driving component includes one or more of a mechanical driving source, an electric driving source, a magnetic driving source, and a fluid pressure driving source.
Through adopting above-mentioned technical scheme, install the module casing in the spread groove after, drive lift extension piece with drive assembly and connect first electrode layer and second electrode layer, through drive assembly's setting, reduce the contact with the guide post for the switching on of first electrode layer and second electrode layer is more convenient and fast, and connects more firm.
Optionally, the mechanical driving source includes dwang, gear and rack, the dwang rotate set up in on the shell base, the rack set up in on the guide post, the gear set up in on the dwang, the gear with the rack engagement.
Through adopting above-mentioned technical scheme, install the module casing in the spread groove after, rotatory dwang, the dwang drives gear rotation, and the rack is driven to the gear and is slided, and the rack drives the guide post and slides, and the guide post drives the contact and is close to towards the second electrode layer, and the mechanical drive source of setting simple structure is convenient for operate, and can give the great tight power of support of guide post and contact for contact and second electrode layer fully contact.
Optionally, the mechanical driving source further comprises a connecting screw, the connecting screw is in threaded connection with the housing base and is connected with the rotating rod, and the gear is always meshed with the rack.
By adopting the technical scheme, after the module shell is arranged in the connecting groove, the connecting screw is rotated, the connecting screw drives the rotating rod to rotate, the rotating rod drives the gear to rotate, the gear drives the rack to slide, the rack drives the guide post to slide, and the guide post drives the contact head to approach to the second electrode layer; the connecting screw that sets up can play fine fixed action to the dwang, can reduce the connection of contact and second electrode layer and break away from for conductive effect is kept, and then makes lightning protection effect keep.
In summary, the present application includes the following beneficial technical effects:
1. the conduction module reduces the guide damage caused by overlarge current, so that the lightning protection effect of the lightning protection device is maintained, meanwhile, the conduction area is large, the current can pass quickly, and the stability of the lightning protection device is improved;
2. through the arrangement of the cone grooves and the conductive cones, the conductive area is further increased, the contact between the lifting extension piece and the second electrode layer is better, the conductive stability is further enhanced, the conductive area is increased, the contact is good, the local heating is reduced, and the lightning protection effect of the lightning protection device is further maintained;
3. the connecting screw that sets up can play fine fixed action to the dwang, can reduce the connection of contact and second electrode layer and break away from for conductive effect is kept, and then makes lightning protection effect keep.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a maintenance-free charging pile power lightning protection device in an embodiment of the present application;
FIG. 2 is a schematic structural view of a pressure sensitive component according to an embodiment of the present application;
FIG. 3 is a schematic view of a lifting extension in an embodiment of the present application;
FIG. 4 is a cross-sectional view of a housing base in an embodiment of the present application;
FIG. 5 is a schematic diagram of a driving assembly according to an embodiment of the present disclosure;
FIG. 6 is an exploded view of a module housing and housing base in an embodiment of the present application;
FIG. 7 is an enlarged view of A in FIG. 4;
FIG. 8 is an exploded view of a graphite module in an embodiment of the present application;
fig. 9 is a circuit diagram of a circuit module in an embodiment of the present application.
Reference numerals: 100. a module housing; 200. a pressure sensitive component; 210. a piezoresistor; 220. a trip piece; 221. a sliding groove; 230. a rotating piece; 240. tripping welding spots; 250. an abutment block; 260. desensitizing springs; 300. a housing base; 310. a connecting groove; 320. a linkage groove; 400. a conduction module; 410. a first electrode layer; 420. a second electrode layer; 421. a contact hole; 422. a conductive groove; 423. a conical groove; 430. lifting the extension; 431. a guide post; 432. a contact; 433. a conductive post; 434. an annular contact ring; 435. a conductive cone; 440. an insulating layer; 441. penetrating holes; 450. a drive assembly; 451. a rotating lever; 452. a gear; 453. a rack; 454. a connecting screw; 500. a closing mechanism; 510. a closing plate; 511. a guide groove; 520. a reset spring; 530. a connecting block; 600. a graphite module; 610. an insulating clamping plate; 620. an electrode wafer; 630. a graphite sheet; 640. an isolation gasket; 650. an electrode lead; 660. a high voltage capacitor; 700. a circuit indication module; 710. a diode; 720. a resistor; 730. a luminous tube indicator lamp; 740. a photocoupler; 810. insulating tabletting; 811. a limit clamping groove; 820. a contact pin; 830. a conductive terminal; 840. a limit protrusion; 850. and (5) conducting wires.
Detailed Description
The present application is described in further detail below in conjunction with fig. 1-9.
The embodiment of the application discloses a maintenance-free charging pile power lightning protection device.
Referring to fig. 1, the maintenance-free charging pile power lightning protection device includes a housing base 300, a plurality of module cases 100 disposed on the housing base 300, a pressure sensitive assembly 200 disposed in the module cases 100 for transient current release, a conductive module 400 disposed on the housing base 300 for connecting the housing base 300 and the module cases 100, and a wire inlet end and a ground end disposed on the housing base 300 and connected to the conductive module 400; the housing base 300 is mounted on a charging pile, then the live wire is connected with the incoming wire end, then the grounding end is connected with the ground wire, when transient current is generated in thunder and lightning weather, the transient current enters the incoming wire end, then enters the pressure sensitive assembly 200 through the conduction module 400, the resistance 720 of the pressure sensitive assembly 200 becomes small, and the current enters the ground wire through the grounding end to be conducted to the ground.
The shell base 300 is provided with a plurality of connecting grooves 310, each connecting groove 310 corresponds to one module shell 100, the side wall, close to the module shell 100, of each connecting groove 310 is provided with a first accommodating cavity, the conducting module 400 comprises a first electrode layer 410 fixedly connected in the first accommodating cavity, one end, close to the first electrode layer 410, of the module shell 100 is provided with a second accommodating cavity, the second accommodating cavity is fixedly connected with a second electrode layer 420, and the first electrode layer 410 corresponds to the second electrode layer 420; the first electrode layer 410 is provided with a via hole, the via hole is internally provided with a lifting extension piece 430, the lifting extension piece 430 comprises a guide post 431 which is glidingly connected in the via hole, the guide post 431 is conductive metal, preferably copper, the guide post 433 is provided with a contact head 432, the contact head 432 comprises an annular contact ring 434 which is integrally arranged on the guide post 431 and far away from the first electrode layer 410, one end of the annular contact ring 434, far away from the guide post 431, is integrally provided with a conductive post 433, one end of the conductive post 433, far away from the annular contact ring 434, is conical, the joint of the annular contact ring 434 and the conductive post 433 is smoothly transited to form a conductive cone 435, the second electrode layer 420 is provided with a contact hole 421, and the conductive post 433 is spliced in the contact hole 421 and forms an annular conductive area with the inner wall of the contact hole 421; the second electrode layer 420 is close to the conductive groove 422 communicated with the contact hole 421 on the side wall of the first electrode layer 410, the annular contact ring 434 is inserted into the conductive groove 422, the conductive groove 422 is close to the side wall of the contact hole 421 and is provided with the cone groove 423, and the conductive cone 435 is inserted into the cone groove 423 and is attached to the cone groove 423.
The side wall of the connecting groove 310 close to the module housing 100 and the side wall of the module housing 100 close to the first electrode layer 410 are fixedly connected with an insulating layer 440, the insulating layer 440 seals the first accommodating cavity and the second accommodating cavity, and a penetrating hole 441 for the conductive column 433 to penetrate is formed in the insulating layer 440.
The housing base 300 is provided with a driving assembly 450, and the driving assembly 450 includes one or more of a mechanical driving source, an electric driving source, a magnetic driving source and a fluid pressure driving source. In a non-limiting specific description of the mechanical driving source of the driving assembly 450, in a preferred example, the mechanical driving source of the driving assembly 450 is specifically a connection screw 454, the connection screw 454 is in threaded connection with the housing base 300, an end portion of the connection screw 454 is fixedly connected with a rotating rod 451, a gear 452 is connected to the rotating rod 451 in a key manner, a rack 453 is integrally provided on the guide post 431, the gear 452 is meshed with the rack 453, the gear 452 and the rack 453 are made of insulating materials, and the gear 452 and the rack 453 are reduced to be electrically conductive.
The sealing mechanism 500 comprises two sealing plates 510 which are slidably connected to each insulating layer 440, one ends of the two sealing plates 510 close to each other are flush, the two sealing plates 510 move in opposite directions or in opposite directions along the width direction of the module housing 100, when the two sealing plates 510 are abutted, a through hole 441 is sealed, a guide groove 511 is formed in the joint position of the sealing plates 510, the guide groove 511 is a tapered groove, the cross section area of one end of the guide groove 511 close to the conductive column 433 is smaller than the cross section area of one end of the guide groove 511 away from the conductive column 433, and the end of the conductive column 433 is inserted into the guide groove 511 and does not exceed the end surface of the sealing plate 510 close to the module housing 100; two reset springs 520 are fixedly connected to the insulating layer 440, the reset springs 520 are connected with the two closing plates 510 and drive the two closing plates 510 to approach each other, and insulating materials are attached to the outer sides of the reset springs 520; in order to facilitate synchronous sliding of the closing plate 510 on the module housing 100 and the closing plate 510 on the housing base 300, a connecting block 530 is fixedly connected to the closing on the module housing 100, and a linkage groove 320 is formed on a side wall of the insulating layer 440 on the housing base 300, which is close to the module housing 100, and on the closing plate 510, the linkage groove 320 is formed in a direction consistent with the installation direction of the module housing 100, and the connecting block 530 can slide in the linkage groove 320, so that the closing plates 510 on the two insulating layers 440 are synchronously opened and closed.
The graphite module 600 is arranged in the module shell 100, the graphite module 600 comprises two insulating clamping plates 610, the two insulating clamping plates 610 are connected through connecting bolts, mounting grooves are formed in the side walls, close to each other, of the two insulating clamping plates 610, electrode wafers 620, graphite sheets 630, isolation gaskets 640, graphite sheets 630 and electrode wafers 620 are sequentially abutted in the mounting grooves, electrode leads 650 are welded on the two electrode wafers 620, the two electrode leads 650 respectively penetrate through the two insulating clamping plates 610, and one ends of the two motor leads are connected with the second electrode layer 420, close to the grounding end; the other electrode lead 650 is connected to the pressure sensitive assembly 200, and the graphite module 600 controls the interval between the two graphite sheets 630 through the thickness of the separation gasket 640, thereby controlling the voltage drop at the time of lightning protection discharge.
The voltage-sensitive assembly 200 comprises a piezoresistor 210 which is abutted against one side of an insulating clamping plate 610, an electrode at one end of the piezoresistor 210 is connected with an electrode lead 650 far away from a grounding end, an electrode at the other end of the piezoresistor 210 is connected with a tripping piece 220, the tripping piece 220 is an elastic piece, one end far away from the piezoresistor 210 extends towards a wiring end, a tripping welding point 240 is fixedly connected to a second electrode piece near the wiring end, and one end of the tripping piece 220 far away from the piezoresistor 210 is spliced in the tripping welding point 240; the rotary piece 230 is rotationally connected between the tripping piece 220 and the piezoresistor 210, the rotary piece 230 rotates along the length direction of the tripping piece 220, the abutting piece 250 is fixedly connected to the side wall of the rotary piece 230, which is far away from the piezoresistor 210, the sliding groove 221 is formed in the tripping piece 220, the sliding groove 221 is formed along the length direction of the tripping piece 220, the abutting piece 250 is spliced in the sliding groove 221 and slides along the sliding groove 221, a desensitizing spring 260 is fixedly connected in the module shell 100, the desensitizing spring 260 is connected with the rotary piece 230 and drives the rotary piece 230 to rotate towards the direction close to the grounding end, the abutting piece 250 abuts against the side wall of the sliding groove 221, which is close to the grounding end, a guide surface is formed at the abutting end, the guide surface is obliquely formed, one end of the guide surface, which is close to the grounding end, is inclined towards the direction close to the desensitizing resistor 720, the guide surface is positioned in the sliding groove 221, when the tripping welding point 240 is fused, the tripping piece 220 slightly warps, the guide surface abuts against the side wall of the tripping piece 220, and the tripping piece 220 is driven by the pulling of the desensitizing spring 260, so that the abutting piece 230 drives the abutting piece 230 to rotate towards the direction close to the grounding end, and the tripping piece 220 are completely separated from the guide surface 240.
The voltage dependent resistor 210 and the two ends of the tripping welding spot 240 are connected in parallel with a circuit indication module 700, the circuit indication module 700 comprises a unidirectional conductive diode 710, one end of the unidirectional conductive diode 710 is connected with a terminal, the other end of the unidirectional conductive diode 710 is connected with a resistor 720 for limiting current, the resistor 720 is far away from the diode 710 and is connected with a luminous tube indicator 730 for indicating the working state, one end of the luminous tube indicator 730 far away from the resistor 720 is connected with a photoelectric coupler 740 for remote signaling output, and one end of the photoelectric coupler 740 far away from the luminous tube indicator 730 is connected with an electrode lead 650 of the graphite module 600, which is connected with the voltage dependent resistor 210; the housing base 300 is provided with a remote signaling end, and the remote signaling end is connected with the photoelectric coupler 740 and is used for transmitting fault information. A high voltage capacitor 660 is connected between the two electrode leads 650 of the graphite module 600 to reduce the discharge residual voltage of the graphite module 600; when the pressure sensitive component 200 fails in a short circuit or the high-voltage capacitor 660 is damaged and opened, the luminous tube indicator lamp 730 is extinguished, the output end of the photoelectric coupler 740 is disconnected, and the remote signaling port transmits signals to a user.
The lead-in end and the grounding end are opened, so that the first electrode layer 410 is exposed to form a wiring terminal, and the lead-in end and the grounding end are slidably connected with an insulating pressing sheet 810, and the insulating pressing sheet 810 can be abutted against the first electrode layer 410; the shell base 300 is in threaded connection with a tightening bolt, and the tightening bolt is in rotary connection with the insulating pressing piece 810 and drives the insulating pressing piece 810 to approach the first electrode layer 410; a conductive terminal 830 is abutted between the insulating pressing sheet 810 and the first electrode layer 410, the conductive terminal 830 is flat and is connected with a wire 850, a limiting protrusion 840 is formed at one end of the conductive terminal 830 away from the wire 850, the limiting protrusion 840 is located at one side of the conductive terminal 830 close to the insulating pressing sheet 810, and a limiting clamping groove 811 for clamping the limiting protrusion 840 is formed in the insulating pressing sheet 810.
The implementation principle of the maintenance-free charging pile power lightning protection device provided by the embodiment of the application is as follows: when the lightning protection device is installed, the housing base 300 is taken out, the module shell 100 is inserted into the connecting groove 310, then the connecting screw 454 is rotated, the connecting screw 454 drives the gear 452 to rotate through the rotating rod 451, the gear 452 drives the rack 453 to slide, the rack 453 drives the annular contact ring 434 on the guide post 431 and the conductive post 433 to abut against the sealing plate 510, then the conductive post 433 is inserted into the guide groove 511, and along with the rotation of the connecting screw 454, the guide post 431 approaches the module shell 100, meanwhile, the sealing plate 510 is opened to pass through the hole 441, the guide post 431 is inserted into the contact hole 421 to form an annular conductive area, the annular contact ring 434 is inserted into the conductive groove 422, and the conductive cone 435 is inserted into the conical groove 423, so that the first electrode layer 410 and the second electrode layer 420 are conducted; when a transient current is generated, the transient current is transferred to the second electrode layer 420 through the first electrode layer 410, the guide post 431, the annular contact ring 434, and the conductive post 433, and then the current is transferred to the ground through the pressure sensitive assembly 200 and the graphite module 600 inside the module case 100.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The maintenance-free charging pile power lightning protection device is characterized by comprising a module shell (100), a pressure-sensitive assembly (200), a shell base (300) and a conduction module (400), wherein at least two connecting grooves (310) for accommodating the module shell (100) are formed in the shell base (300); the pressure-sensitive assembly (200) is arranged in the module shell (100), at least two wire inlet ends and one grounding end corresponding to the module shell (100) are arranged on the shell base (300), the conducting module (400) comprises a first electrode layer (410), a second electrode layer (420) and a lifting extension piece (430), the first electrode layer (410) is arranged on the side wall, close to the wire inlet end and close to the grounding end, of the connecting groove (310), and the first electrode layers (410) on two sides are respectively and electrically connected with the wire inlet end and the grounding end; the second electrode layers (420) are arranged at both ends of the module shell (100); the lifting extension (430) has a guide post (431) that slides on the housing base (300) and is electrically connected to the first electrode layer (410) and a contact (432) that can be connected to the second electrode layer (420), the contact (432) being connectable to the second electrode layer (420) and forming an annular conductive region.
2. The maintenance-free charging pile power lightning protection device according to claim 1, wherein a contact hole (421) is formed in the second electrode layer (420), the contact head (432) comprises an annular contact ring (434) and a conductive column (433), the annular contact ring (434) is connected with the guide column (431) and slides along with the guide column (431), the annular contact ring (434) is abutted to and conducted with the second electrode layer (420), the conductive column (433) is inserted into the contact hole (421), and the conductive column (433) is abutted to the inner wall of the contact hole (421) and forms the annular conductive area.
3. The maintenance-free charging pile power lightning protection device according to claim 2, wherein the second electrode layer (420) is provided with a conductive groove (422), and the annular contact ring (434) can be immersed in the conductive groove (422) and is in contact with the peripheral side wall of the conductive groove (422).
4. A maintenance-free charging pile power lightning protection device according to claim 3, wherein a conductive cone (435) is formed at the connection part of the annular contact ring (434) and the conductive column (433) to realize smooth transition between the annular contact ring (434) and the conductive column (433), and a cone groove (423) adapted to the conductive cone (435) is formed on the bottom wall of the conductive groove (422).
5. The maintenance-free charging pile power lightning protection device according to claim 3 or 4, wherein the module housing (100) and the housing base (300) are both provided with an insulating layer (440) for isolating the first electrode layer (410) and the second electrode layer (420), the insulating layer (440) is provided with a penetrating hole (441) for the conductive column (433) and the annular contact ring (434) to pass through, and the insulating layer (440) is provided with a sealing mechanism (500) for sealing the penetrating hole (441).
6. The maintenance-free charging pile power lightning protection device according to claim 5, wherein the sealing mechanism (500) comprises a sealing plate (510), two sealing plates (510) slide on the insulating layer (440), and the two sealing plates (510) slide against and seal the through hole (441).
7. The maintenance-free charging pile power lightning protection device according to claim 6, wherein the sealing mechanism (500) further comprises a connecting block (530), the sealing plates (510) on the module housing (100) are provided with the connecting block (530), the sealing plates (510) on the housing base (300) are provided with linkage grooves (320), the connecting block (530) is detachably connected in the linkage grooves (320), the side wall, close to the conductive column (433), of the sealing plates (510) is provided with guide grooves (511) for the conductive column (433) to penetrate, and the sealing plates (510) open the penetrating holes (441) along with the sliding of the conductive column (433).
8. The maintenance-free charging pile power lightning protection device according to claim 6, wherein the closing mechanism (500) further comprises a reset spring (520), two reset springs (520) are arranged on the insulating layer (440), the reset springs (520) are connected with the closing plates (510), and the two reset springs (520) push the two closing plates (510) to approach each other.
9. The maintenance-free charging pile power lightning protection device according to any one of claims 1-4, wherein a driving assembly (450) is arranged on the housing base (300), the driving assembly (450) is connected with the lifting extension piece (430) and drives the lifting extension piece (430) to slide, the driving assembly (450) comprises a rotating rod (451), a gear (452) and a rack (453), the rotating rod (451) is rotatably arranged on the housing base (300), the rack (453) is arranged on the guide post (431), the gear (452) is arranged on the rotating rod (451), and the gear (452) is meshed with the rack (453).
10. The maintenance-free charging pile power lightning protection device according to claim 9, wherein the driving assembly (450) further comprises a connecting screw (454), the connecting screw (454) is in threaded connection with the housing base (300) and is connected with the rotating rod (451), and the gear (452) is always meshed with the rack (453).
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| CN202311057802.1A CN117081023B (en) | 2023-08-21 | 2023-08-21 | Maintenance-free charging pile power lightning protection device |
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| CN202311057802.1A CN117081023B (en) | 2023-08-21 | 2023-08-21 | Maintenance-free charging pile power lightning protection device |
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| CN117081023B true CN117081023B (en) | 2024-02-06 |
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Also Published As
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| CN117081023A (en) | 2023-11-17 |
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